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Activated carbon adsorption type three-dimensional radon measurement method

An activated carbon adsorption and activated carbon technology is applied in the field of uranium exploration geophysics, which can solve the problems of difficulty in identifying and delineating abnormal information of deep uranium mineralization, and inability to speculate on abnormal trends of radon.

Active Publication Date: 2018-07-03
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

[0004] The technical problem to be solved in the present invention is: the existing radon measuring method cannot infer the vertical abnormal trend of radon, and it is difficult to realize the identification and delineation of the abnormality of deep uranium mineralization information

Method used

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  • Activated carbon adsorption type three-dimensional radon measurement method

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Embodiment 1

[0053] step 1

[0054] According to the remote sensing data of regional geology, geophysical and geochemical prospecting by previous researchers, the area of ​​industrial holes revealed in the Kamuser area of ​​the Junggar Basin is selected to be about 3km 2 In the survey area, the survey line is arranged from west to east in the north-south direction, and the survey grid adopts 200m×500m, and part of it is encrypted to 100m×250m.

[0055] step 2

[0056] Set the coordinates of the measuring point kilometer network according to the point-line grid determined in step 1.

[0057] step 3

[0058] The activated carbon radon measuring instrument uses the HD2002 radon measuring instrument produced by the Beijing Institute of Geology of the Nuclear Industry, and is calibrated at the nuclear industry metering station. The measurement cycle is set to 2 minutes. After the calibration is passed, the calibration coefficient is put into the activated carbon radon measuring instrument.

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Abstract

The invention belongs to the technical field of uranium exploration geophysics and specifically relates to an activated carbon adsorption type three-dimensional radon measurement method. The method comprises the following steps: selecting a measurement area and determining a point-line grid of the measurement area; setting a kilometer grid coordinate of each measurement point; setting measurementperiod and carrying out calibration on an activated carbon radon measuring instrument; carrying out positioning and marking according to latitude and longitude coordinates of the measurement point; carrying out activated carbon radon measuring instrument stability check and measurement system background measurement; carrying out on-site field burying of an activated carbon adsorption device; taking out the activated carbon adsorption device to obtain soil radon concentration value of the measurement point; and carrying out data processing to determine three-dimensional radon concentration abnormity lower limit, three-dimensional radon concentration high-value lower limit, three-dimensional radon concentration high-value abnormity lower limit and three-dimensional space radon concentrationaverage value, and drawing a three-dimensional radon concentration contour map. The method solves the technical problem that an existing radon measurement method cannot predict the vertical anomaly trend of radon, obtains soil radon concentration at different positions in the soil three-dimensional space and realizes identification and delineation of deep uranium mineralization information.

Description

technical field [0001] The invention belongs to the technical field of uranium ore exploration geophysics, and in particular relates to an activated carbon adsorption type three-dimensional radon measurement method. Background technique [0002] The measurement of radon and its daughters is an important direct detection method of uranium mineralization information in the field of uranium ore exploration, including two measurement methods: instantaneous measurement and cumulative measurement. The soil radon concentration characteristics obtained by these two measurement methods are generally consistent. For exposed surface or shallow uranium deposits, the area corresponding to the abnormal range of soil radon concentration corresponds to the ore body. For deep uranium mines, due to the influence of the geological environment of the overburden, in most cases, the area corresponding to the abnormal range of soil radon concentration obtained by the traditional radon measurement ...

Claims

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Application Information

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IPC IPC(8): G01T1/167
CPCG01T1/167
Inventor 李必红何中波杨龙泉田渴新
Owner BEIJING RES INST OF URANIUM GEOLOGY
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